US6942384B2 - Housing for probe used to measure temperature through a container wall - Google Patents
Housing for probe used to measure temperature through a container wall Download PDFInfo
- Publication number
- US6942384B2 US6942384B2 US09/861,096 US86109601A US6942384B2 US 6942384 B2 US6942384 B2 US 6942384B2 US 86109601 A US86109601 A US 86109601A US 6942384 B2 US6942384 B2 US 6942384B2
- Authority
- US
- United States
- Prior art keywords
- container
- housing device
- probe
- wall
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
Links
- 239000000523 sample Substances 0.000 title claims abstract description 95
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 16
- 230000007423 decrease Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 13
- 238000004821 distillation Methods 0.000 claims description 8
- 239000011796 hollow space material Substances 0.000 claims description 8
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000012809 cooling fluid Substances 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
Definitions
- the present invention concerns a device for housing a probe or sensor used to measure the internal temperature in a container, such as for example a reactor, a storage tank, a column, or similar container, through its wall.
- a container such as for example a reactor, a storage tank, a column, or similar container, through its wall.
- the device must be sealed and resistant to internal reactor pressure. It must also measure temperature quickly, dependably, and precisely while limiting interference from the temperature of the exterior environment or the temperature of the reactor's heating or cooling means.
- the temperature measurement device must adapt to existing types of probes and must adapt readily to all types of reactors, or even other equipment, all at the lowest possible cost.
- the device must allow easy access to the sensor from the exterior so it can be quickly and simply changed without interfering with the reaction in progress inside the reactor.
- the conventional prior art method of measuring temperature inside a reactor consisted of forming a tubulure in the reactor wall and then introducing into it a temperature probe surrounded by a thermometric case. Thus, the end of the probe contacts the reactive environment in order to measure its temperature.
- thermometric sheath As well as a sealing and attachment device for maintaining the probe once it is introduced. This device poses numerous sealing problems which can be dangerous.
- the temperature probe is maintained in contact with a thinner portion of the reactor wall and it measures the temperature of the reactor contents through the wall. Thus, it is not necessary to form a penetrating opening.
- the probe is not only in contact with the thinner portion of the reactor wall, but it is also very close to the heating or cooling fluid contained in the double envelope or the coil.
- the fluid exerts considerable influence on the temperature as measured by the probe, resulting in a particularly inaccurate measurement that it not representative of the interior temperature.
- This problem worsens when the internal reactor surface is covered with a layer of enamel, which constitutes an effective thermal insulation between the reactive environment and the probe.
- the object of the present invention is to provide a housing for a temperature measurement probe performing quick, reliable and precise measurements of the interior temperature, while minimizing thermal interference caused by the heating or cooling means and/or the external environment and eliminating the disadvantages of the systems described above.
- the principle of the present invention consists of placing the measurement point toward the interior of the container by making a local deformation in the wall in the form of a non-penetrating area that is recessed toward the interior of the container and which serves as a housing for a contact temperature probe.
- the thickness of the container wall decreases progressively in the area of this recessed area until it becomes minimal at the measurement point, which preferably corresponds to the point that is closest to the interior of the container.
- a conventional contact temperature probe is then simply introduced into the housing device according to the invention until it contacts the front zone of the recess corresponding to the thinner area of the container wall, through which the temperature of the reactive environment is measured.
- the housing device Through the use of the housing device according to the invention, measurement takes place far from any source of interference, specifically, thermal interference. Moreover, since the housing is surrounded by the liquid whose temperature is to be measured, there is a considerably larger thermal exchange surface. As a result, the measurement is reliable, precise, representative of the interior temperature, and far less subjected to inertia since the contact wall is thin.
- the wall can resist pressure exerted by the reactor contents without any problem.
- the housing device according to the invention does not penetrate the interior of the reactor, there is no sealing problem.
- the expensive, problematic use of a tubulure is thus eliminated.
- no thermometric sheath is required.
- the probe since the probe is not plunged directly inside the reactor, it can be quickly and easily changed or withdrawn without affecting the progress of the reaction inside the container in any way whatsoever.
- the housing device according to the invention offers the combined advantages of a probe that can be plunged inside the reactor and a contact probe, but with none of the drawbacks associated with either type.
- the housing device of the invention is easy to manufacture and adapt to any type of reactor, column, storage tank or other storage container. Moreover, most existing contact temperature measurement probes can be readily adapted to it.
- FIG. 1 is a schematic longitudinal cross section of a reactor equipped with a tubulure and a temperature probe that is plunged inside the reactor according to the prior art;
- FIG. 2 is an enlarged cross-section of the portion of the reactor of FIG. 1 that is equipped with a tubulure and a temperature probe that is plunged inside the reactor according to the prior art;
- FIG. 3 is a schematic longitudinal cross-section of a reactor equipped with a contact temperature probe attached to the reactor wall according to the prior art
- FIG. 4 is an enlarged cross-section of the portion of the reactor of FIG. 3 that is equipped with a contact temperature probe attached to the reactor wall according to the prior art;
- FIG. 5 is a schematic longitudinal cross-section of a reactor equipped, according to the present invention, with a housing device for the temperature probe which takes measurements by contact with the wall;
- FIG. 6 is an enlarged cross-section, similar to that of FIG. 6 , of the portion of the reactor of FIG. 5 comprising a housing device according to the invention with a contact temperature probe positioned therein;
- FIG. 7 is an enlarged cross-section of the portion of the reactor of FIG. 5 comprising, according to the present invention, a housing device for the temperature probe which takes measurements by contact with the wall;
- FIG. 8 is a schematic longitudinal cross-section of a column, for example, a distillation column, equipped with a plurality of housing devices for contact temperature probes according to the present invention mounted in the lateral wall of said column.
- FIGS. 1 through 8 The housing device for a contact probe measuring temperature through a container wall according to the present invention will now be described in detail with reference to FIGS. 1 through 8 . Equivalent elements shown in the various drawings will bear the same reference numerals.
- FIGS. 1 , 3 and 5 are schematic drawings of a chemical reactor 1 with three upper openings 2 , 3 and 4 which may be used for introducing different reagents, solvents, and catalysts, or for admitting various instruments or accessories (agitator, mole, probes, gripping tools, etc.) into reactor 1 and with a lower orifice 5 for completely emptying its contents through a drain valve.
- instruments or accessories agitator, mole, probes, gripping tools, etc.
- Reactor 1 is equipped with a mechanical agitator 6 with a rod 7 passing through central opening 3 and plunging toward the lower portion of the reactor.
- Rod 7 terminates in a unit of three inclined blades which stir the contents 9 of reactor 1 when the rod is rotated by a drive motor 10 located outside the reactor.
- a second wall 11 surrounds the internal wall 12 of reactor 1 some distance away from it, forming a closed annular space 13 between the two walls. This space 13 will hold hot or cold heat exchanging fluid 14 for regulating the internal temperature of the reactor according to the well-known double envelope or jacket principle.
- FIGS. 1 and 2 show the conventional temperature measurement system of the prior art using a probe plunged inside the reactor.
- Reactor 1 has in its lower portion an orifice 15 allowing access to the interior.
- Said orifice 15 constitutes the interior extremity of a tubulure 16 originating inside the reactor, passing through the double envelope and opening at an exterior projection.
- Tubulure 16 is for the introduction of a temperature measurement probe 17 , the measurement end 18 of which is plunged into liquid 9 inside the reactor.
- the internal diameter of tubulure 16 must be generally larger than the external diameter of the probe to allow insertion.
- Sealed area 13 which holds fluid 14 for heating or cooling reactor 1 is interrupted in one place by partition 19 near the temperature measurement device.
- Such a device must always comprise seals and insulation(not shown) to eliminate any risk of leaks when probe 17 is place inside tubulure 16 , as well as a thermometric sheath.
- FIGS. 3 and 4 Another temperature measurement device proposed in the prior art is shown in FIGS. 3 and 4 .
- probe 17 is a probe for measuring temperature by contact with a wall. It is placed against internal wall 12 of reactor 1 near a thinner area 20 in said internal wall 12 .
- the thinner area 20 remains small in size in order to resist internal pressure from reactor 1 .
- Probe 17 measures the temperature of wall 12 at the thinner area 20 which the probe extremity contacts and where measurement takes place. Since wall 12 is less thick at the thinner region 20 and in direct contact with the liquid 9 on its other surface, this measurement is considered to provide a good approximation of the temperature of liquid 9 contained in the reactor.
- the internal wall 12 of the reactor is also in contact, on its other surface, with heating or cooling fluid 14 as far as blocking wall 19 .
- Probe extremity 18 where the measurements are performed is very close to hot or cold heat exchanging fluid 14 . Therefore, the measurement is strongly influenced by the thermal conductivity of massive wall 12 and by the proximity of heat exchanging fluid 14 . Rapid temperature variations in the reactive environment are masked due to the inertia of massive wall 12 .
- a device such as this has too long a response time and delivers imprecise results.
- FIG. 5 illustrates a reactor 1 which is similar to the preceding reactors, but this time equipped with the housing device of the instant invention.
- Interior wall 12 of reactor 1 has been locally deformed toward the inside at the lower portion so as to form a recess 21 pointing toward the inside of reactor 1 , preferably perpendicular to the wall.
- wall 12 decreases progressively in thickness until it is of minimal thickness at base 22 , constituting a front surface facing towards the interior of the container.
- the recess defines on the outside of reactor 1 a hollow space 23 capable of housing local temperature measurement contact probe 17 .
- Probe 17 shown in FIG. 6 , can be inserted into housing 23 with its sensitive end 18 placed against the thinner wall 22 .
- temperature measurement takes place through thin base wall 22 .
- the measurement point on base 22 of recess 21 is located away from the double envelope and from the hot or cold heat exchanging fluid 14 it contains. Therefore, disruptions in thermal measurement due to proximity of heat exchanging fluid 14 are reduced considerably.
- recess 21 forms a projection which is completely immersed in reactive environment 9 .
- wall 12 is in contact with only the liquid 9 inside the reactor and is not in simultaneous contact with heat exchanging fluid 14 .
- thermal exchange surface is increased considerably and there is less interference than in the prior art device shown in FIGS. 3 and 4 .
- wall 12 is capable of resisting pressure exerted by the reactor contents.
- probe 17 When it is placed inside the housing of the invention, the entire upper portion 24 of probe 17 is surrounded by a thin metal envelope, which is itself surrounded by liquid 9 . Since the wall of base 22 is, in addition, very thin, probe 17 is subjected to nearly the same conditions as the probe plunged inside the device shown in FIGS. 1 and 2 . Temperature measurement is precise, with improved response time.
- wall 12 is not perforated in any portion of recess 21 , which does not penetrate the wall. This eliminates the problem of sealing the housing device as in the prior art. Furthermore, the housing device according to the present invention does not require use of a tubulure or a thermometric sheath.
- the measurement point is located in an area where reactive liquid 9 is at a temperature that is representative of the temperature of the remainder of the reactor contents; it does not rise or fall falsely due to direct contact with the double envelope.
- the recess according to the invention is preferably formed in the lower portion of reactor 1 , as shown in FIG. 5 .
- the probe is placed in an area that is always full, away from thermal surface flux, and where the reactive environment 9 is homogeneous since it is thoroughly mixed by agitator 6 .
- the housing device of the invention can be formed on any part of the reactor wall whatsoever using a simple, inexpensive procedure.
- the housing device of the invention is designed to maintain probe 17 in the measurement position and it may comprise a support for this purpose.
- FIG. 6 as an example, there is shown a contact probe (of the SLR type) attached by plunging it inside housing 23 .
- the housing device of the invention can be used with any type of contact temperature probe (for example, DR and SVR type probes, SLR, DR and SVR are model nomenclature for bayonet and push type contact temperature probes made by the chemical equipment company De Dietrich et CIE), since a person skilled in the art can easily conceive of a support device adaptable to the type of probe desired.
- DR and SVR type probes SLR, DR and SVR are model nomenclature for bayonet and push type contact temperature probes made by the chemical equipment company De Dietrich et CIE
- recess 21 and housing 23 are not limited to the examples described and shown. It is easy to foresee how they can be modified to better respond to the specific technical requirements of a situation without departing from the scope of the present invention.
- probe 17 can be quickly and easily positioned, removed, or replaced from the exterior of the reactor without any effect at all on the reaction in progress.
- the above procedure also applies.
- the temperature of the exterior environment could be considered a source of interference when measuring the temperature of the reactor's contents if the measurement point of the probe is not located far enough away and insulated from it sufficiently.
- the device of the invention can significantly improve precision and speed of measurement.
- the temperature probe housing according to the invention is particularly well-suited to being formed within the wall of a reactor, as shown in FIGS. 1 through 7 . However, it is important to note that its use is not limited to this application.
- the housing device can also be incorporated in the wall of any type of reactor, enamel or not, whatever its design or method of temperature regulation.
- the housing device of the invention is not limited to use in a reactor, but may be used on any type of container when it is useful to measure the temperature of its contents.
- a device might be provided on a container, a storage tank, a distillation column, or other device.
- FIG. 8 there is shown by way of example an industrial distillation column 25 comprising a plurality of housing devices according to the invention, each of which may be equipped with a probe for measuring temperature through the wall by contacting the wall.
- housing devices according to the invention are not located in only the lower wall of the container, as in the preceding example of a reactor shown in FIGS. 5 through 7 .
- Five housing devices according to the invention are also disposed horizontally at different levels along the lateral wall of the column. This allows the temperature of the contents to be measured at various heights along the distillation column corresponding to different distillation stages.
- the device of the present invention can be adapted just as readily to a reactor as to a column, a storage tank, or other device, on any portion of its wall.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Fire-Detection Mechanisms (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0006463 | 2000-05-19 | ||
FR0006463A FR2809176B1 (en) | 2000-05-19 | 2000-05-19 | DEVICE FOR HOUSING A TEMPERATURE SENSOR THROUGH THE WALL OF A CONTAINER |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010046253A1 US20010046253A1 (en) | 2001-11-29 |
US6942384B2 true US6942384B2 (en) | 2005-09-13 |
Family
ID=8850439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/861,096 Expired - Lifetime US6942384B2 (en) | 2000-05-19 | 2001-05-18 | Housing for probe used to measure temperature through a container wall |
Country Status (6)
Country | Link |
---|---|
US (1) | US6942384B2 (en) |
EP (1) | EP1156312B1 (en) |
JP (1) | JP4841745B2 (en) |
AT (1) | ATE386927T1 (en) |
DE (1) | DE60132846T2 (en) |
FR (1) | FR2809176B1 (en) |
Cited By (6)
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US20050217841A1 (en) * | 2002-10-16 | 2005-10-06 | Clyde Bergemann Gmbh | Heat flux measuring device for pressure pipes, method for producing a measuring device, method for monitoring an operating state of a heat exchanger, heat exchanger and method for measuring a heat flux |
US20060219285A1 (en) * | 2005-03-30 | 2006-10-05 | Nguyen Can T | Quick connect thermocouple mounting device and associated method of use |
US20070009007A1 (en) * | 2002-10-07 | 2007-01-11 | Paul Nicholls | Vessel having temperature monitoring apparatus |
US20090200318A1 (en) * | 2008-02-07 | 2009-08-13 | Honda Motor Co., Ltd. | High-pressure tank |
US20120248099A1 (en) * | 2009-11-16 | 2012-10-04 | Kingtime International Limited | Enclosed offshore tank for storing crude oil |
US20170224859A1 (en) * | 2014-11-13 | 2017-08-10 | Analytic-Tracabilite Hospitaliere | Traceability and monitoring of a sterilisation case and the content of same |
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KR100430280B1 (en) * | 2001-03-14 | 2004-05-04 | 엘지전자 주식회사 | Temperature sensor |
ITMI20051861A1 (en) | 2005-10-04 | 2007-04-05 | Tycon Technoglass S R L | MIXING CONTAINER FOR LIQUID OR SIMILAR SUBSTANCES |
DE202008009252U1 (en) | 2008-07-10 | 2008-11-13 | Thaletec Gmbh | Container for receiving fluids and elongated mounting element for such a container |
EP2396616A1 (en) | 2009-02-10 | 2011-12-21 | Koninklijke Philips Electronics N.V. | Baby feeding bottle |
CN103185642A (en) * | 2011-12-27 | 2013-07-03 | 贵阳铝镁设计研究院有限公司 | On-line temperature measurement method and device for interior of tank |
DE102013000176B4 (en) | 2013-01-09 | 2019-02-28 | Idoneus Anlagenbau Gmbh | Process container with double jacket and connection piece |
DE102014221560B3 (en) * | 2014-10-23 | 2016-04-07 | Moba - Mobile Automation Ag | TEMPERATURE MEASURING DEVICE AND TRANSPORT VEHICLE TUBE |
US10203249B2 (en) * | 2015-12-29 | 2019-02-12 | Google Llc | Ambient temperature sensing |
DE102021134483A1 (en) | 2021-12-23 | 2023-06-29 | Thaletec Gmbh | Container for holding a fluid |
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- 2000-05-19 FR FR0006463A patent/FR2809176B1/en not_active Expired - Lifetime
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- 2001-05-15 AT AT01440132T patent/ATE386927T1/en not_active IP Right Cessation
- 2001-05-15 DE DE60132846T patent/DE60132846T2/en not_active Expired - Lifetime
- 2001-05-15 EP EP01440132A patent/EP1156312B1/en not_active Expired - Lifetime
- 2001-05-18 US US09/861,096 patent/US6942384B2/en not_active Expired - Lifetime
- 2001-05-21 JP JP2001150906A patent/JP4841745B2/en not_active Expired - Fee Related
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US20060219285A1 (en) * | 2005-03-30 | 2006-10-05 | Nguyen Can T | Quick connect thermocouple mounting device and associated method of use |
US8039729B2 (en) * | 2005-03-30 | 2011-10-18 | Robertshaw Controls Company | Quick connect thermocouple mounting device and associated method of use |
US20090200318A1 (en) * | 2008-02-07 | 2009-08-13 | Honda Motor Co., Ltd. | High-pressure tank |
US8113709B2 (en) * | 2008-02-07 | 2012-02-14 | Honda Motor Co., Ltd. | High-pressure tank |
US20120248099A1 (en) * | 2009-11-16 | 2012-10-04 | Kingtime International Limited | Enclosed offshore tank for storing crude oil |
US20170224859A1 (en) * | 2014-11-13 | 2017-08-10 | Analytic-Tracabilite Hospitaliere | Traceability and monitoring of a sterilisation case and the content of same |
Also Published As
Publication number | Publication date |
---|---|
EP1156312A1 (en) | 2001-11-21 |
DE60132846T2 (en) | 2009-03-05 |
US20010046253A1 (en) | 2001-11-29 |
FR2809176B1 (en) | 2002-07-19 |
FR2809176A1 (en) | 2001-11-23 |
DE60132846D1 (en) | 2008-04-03 |
EP1156312B1 (en) | 2008-02-20 |
JP4841745B2 (en) | 2011-12-21 |
JP2002081995A (en) | 2002-03-22 |
ATE386927T1 (en) | 2008-03-15 |
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